n. Term originating from Saturday Night Live meaning the opposite of a cougar; a younger girl who likes older men the way an older woman (cougar) likes younger men

Bartender: Here you go, two shots of tequila.
Andy: We didn't order these.
Bartender: They're from the two ladies over there.
(Points to two 10 year old girls)
Andy: Dude, nice! Thank you, ladies.
Bartender: Watchout, they're gerbils.
Andy: Gerbils?
Bartender: Yeah, The opposite of cougars.

How dare you all show contempt for this sacred creature!! Gerbils are not to be 'used' for 'homosexual pleasures'. They are sovereign, sacred animals. Gerbils have much to teach us, which is why some have volunterred to be pets for humans, even tho humans are mostly mentally and emotionally retarded with minimal awareness and intelligence.